Terribly sore about a cricket club's game (6)
I believe the answer is:
soccer
'game' is the definition.
(example of game)
'terribly sore about a cricket club's' is the wordplay.
'terribly' indicates anagramming the letters.
'about' indicates putting letters inside.
'a cricket club' becomes 'cc' (cricketing abbreviation).
'sore' anagrammed gives 'soer'.
'soer' placed around 'cc' is 'SOCCER'.
(Other definitions for soccer that I've seen before include "... players playing this (colloquially)" , "Football for Americans?" , "Ball game" , "The beautiful game?" , "Informally, game" .)